Population densities of birds breeding in an urban environment dominated by allotment gardens and other ‘green’ areas in a Central European city

Abstract

Abstract A total of 50 breeding bird species were recorded in 2017 in an urban environment (589 ha) in the city of Wrocław, SW Poland. This environment was dominated by green habitats, such as allotment gardens (41.2%), parklnds (13.4%) and forests (2.7%). For 41 species, population densities were estimated. A high population densities were recorded for Phoenicurus phoenicurus (9.2 pairs / 100 ha), Sylvia atricapilla (7.3), Turdus merula (6.6), Phoenicurus ochruros (6.3), Luscinia megarhynchis (5.3.), Sylvia curruca (4.1) and Serinus serinus (3.7). In the alltment gardens, much higher population density of Pica pica (14.5) than Corvus cornix (6.5); and higher population density of Columba palumbus (2.8) than Streptopelia decaocto (1.2) were recorded.